Long-term air quality observations in Swedish rural environment

The Atmospheric Sciences unit in collaboration with Swedish Environmental Research Institute (IVL) monitored a number of air pollutants at Aspvreten, a rural site about 80 km SW of Stockholm. The monitoring commenced in 1984. The monitoring is a part of the national environmental monitoring program that is funded and coordinated by Swedish Environmental Protection Agenecy (Naturvårdsverket). From year 2018 the measurements were moved to Norunda. The ICOS Norunda research station (60°05′N, 17°29′E, 46 m asl) is located about 30 km north of Uppsala and some 80 km N of Stockholm.

During the eighties the measurement were focused on acidification. The nineties shifted the focus to photochemical oxidants e.g. ozone. During the last decades measurements also include long-term monitoring of aerosol particles as well as more process oriented studies of role of atmospheric aerosol in biosphere-atmosphere interactions, air quality and climate.